IF you are open to it, I think it would be more helpful to know what your PTSD is stemming from, but I totally respect if you don't wanna talk about it. I have dealt with a LOT of anger outbursts this year, I think it's because I finally went to a trauma specialist and there is something connected to acting out physically when you are most connected to past anger- but with me since mine is mostly sexual trauma, I usually protect myself and act out towards others or especially other objects. I can TOTALLY connect with you on the TV, our tv receivers have been super Sh*T lately and we have called the company and of course they give us the run around, and a night when I was drunk (I mostly medicate with alcohol but do some weed) and when my husband was working out of town the tv was being totally unresponsive for the third night in a row and I just all the sudden filled with pure rage and chucked the remote at the flat screen and then when I saw the huge shard of color crack in the screen I all the sudden was like OH CRAP. It felt SO good to chuck it the second that I did, but SO much worse when I realized what I did. I ruined our tv, I even went to the effort of trying to go to a store to replace it with the exact model but of course, with America, we remodel things daily, so it wasn't available anymore. I was therefore coerced to tell my husband the truth when he came home, and I knew his disappointment was going to be the worst punishment. I've broken a lot of stuff in our house. While it feels great for the second, it is never worth it. For me, the only options I can offer you is what I am trying to work with now. ---Meditation, and if that's too hippy for you, I am in MMA membership, and that helps a lot too. But I am careful to go to the gym on the days I feel I could lose it. The days you are really fired up, go alone. Go to get training the other days you can control your emotions, and then in time you can focus them on a punching bag with great combos, get it out in better ways.
The bad news is, its not easy, or there is no easy answer. I feel you on feeling kind of being lost with that. But try to keep working. Write some quotes on your wall your family or friends has said to you that makes you feel strong. Anything to make you get up and try to tackle this. It's a beast. So start training like a fighter.